. >>> the navy's blue angels flight team was high above san francisco today, practicing their maneuvers ahead of this weekend's two-day air show. the blue angels are the main attraction, of course, as they are every year, and they will be performing from 3:00 to 4:00 p.m., both saturday and sunday afternoon, of course weather permitting. >>> playoff excitement will reach a fever pitch, as both bay area baseball teams start their first division series this weekend. the oakland a's will face the tigers at 3:00 p.m. on saturday and 9:00 a.m. sunday. the san francisco giants will host the cincinnati reds at 6:30 saturday and sunday nights. >>> and if you're going to the games or getting a group of friends together to watch them, send us your photos of the fan frenzy. e-mail us at photos@ktvu.com, or post your pictures directly on our facebook page and you might even see those pictures on the air. >>> another high profile facebook executive is leaving the social networking company, following its disappointing initial public offering. today, facebook confirmed the departure of joe lockhart, t